I found myself outfitting Art's 3 kits strategy, and then just kept buying - for upgrades, spares, and to make kits for Mom & Dad, brothers, sisters etc - birthday and christmas presents. Peace of mind knowing that they have a good 72 hour kit in their closet. Water containers are another I buy in bulk, then I help them fill up a 15 or 35 gallon container, and store that away.

I'm not very handy at carpentry, plumbing or electrical work, but I can put together a pretty good kit.